I've noticed the preview is more about the instructor than the class. It does give how many lessons and how much time each one takes. I'm surprised they now have classes on CD/DVD's and shocked at the prices of them. Most of the new laptops do not have CD/DVD drives. I can play them on the TV but that doesn't appeal to me. Now I only buy classes when they are on sale for $20.00 or less. They are on sale now I think today or tomorrow is the last day.